I have not seen a trader that do not lose sometimes, i may be new to the forum but been learning before now. it has nothing to do with sentiments but traders have to learn to accept trades the way it is, without attributing loss to any factors; as it leads to more rekts.
Always accept the market as it is without blaming any factors.
Always dyor too
Keep your loss at an acceptable level is the risk management. That is the first lesson that everyone need to learn first before entering the trading financial market, but it's also the part that be ignored the most because when they begin to trade, they just only focus on profit first, not be the risk which they will might lose.